question about charAt function

Posted by davit-datuashvili on Stack Overflow See other posts from Stack Overflow or by davit-datuashvili
Published on 2010-06-02T18:49:29Z Indexed on 2010/06/02 18:54 UTC
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java

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algorithm

i know java API function charAt for example

String  s="dato"
  char r=s.charAt(0); r is equal d

but my question is how realy it works or what function can i use instead of charAt function to get same result? thanks

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